#include <iostream>
using namespace std;

class Complex
{
    public:
        Complex()
        {
            real=0;
            imag=0;
        }
        Complex(double r, double i)
        {
            real = r;
            imag = i;
        }
        Complex operator+ (Complex &c2)
        {
            Complex c;
            c.real = real + c2.real;
            c.imag = imag + c2.imag;
            return c;
        }
        void display();
    private:
        double real;
        double imag;
};

void Complex::display()
{
    cout <<"("<<real<<","<<imag<<"i)"<<endl;

}

int main()
{
    Complex c1(3,4),c2(5,-10),c3;
    c3=c1+c2;
    cout<<"c1=";c1.display();
    cout<<"c2=";c2.display();
    cout<<"c3=";c3.display();

    return 0;
}
